Speaker box



FIG. 1 is a front view of a speaker box, showing my new design;

FIG. 2 is a perspective view of FIG. 1;

FIG. 3 is a rear side view of FIG. 1;

FIG. 4 is a left side view of FIG. 1, the right side being a mirror image thereof; and,

FIG. 5 is a top view of FIG. 1.

The subject matter shown in dashed lines, and any surfaces of the design not shown, including interior surfaces, form no part of the claimed invention. Moreover, all sides not shown in the application form no part of the claimed design. 

CLAIM The ornamental design for a speaker box, as shown and described. 